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 [vas] (pl. va´sa) (L.)
vessel. adj., adj va´sal.
vas aber´rans
1. a blind tube sometimes connected with the epididymis; a vestigial mesonephric tube.
2. any anomalous or unusual vessel.
va´sa afferen´tia vessels that convey fluid to a structure or part.
va´sa bre´via short gastric arteries.
vas de´ferens ductus deferens.
va´sa efferen´tia vessels that convey fluid away from a structure or part.
va´sa lympha´tica lymphatic vessels.
va´sa prae´via the presentation, in front of the fetal head during labor, of the blood vessels of the umbilical cord where they enter the placenta.
va´sa rec´ta re´nis long U-shaped vessels arising from the efferent glomerular arterioles of juxtamedullary nephrons and supplying the renal medulla. Called also arteriolae rectae renis.
va´sa vaso´rum the small nutrient arteries and veins in the walls of the larger blood vessels.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


, gen.


, pl.


, gen. and pl.


(vas, vā'sis, vā'să, vā-sō'rŭm), [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel.
[L. a vessel, dish]
Farlex Partner Medical Dictionary © Farlex 2012


n. pl. vasa (vā′zə) Anatomy
A vessel or duct.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Abbreviation for visual analogue scale.


, pl. vasa (vas, vā'să) [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel
[L. a vessel, dish]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(vas) (va'za) plural.vasa [L. vas, vessel]
A vessel or duct.

vas aberrans

1. A narrow tube varying in length from 112 to 14 in (3.8 to 35.6 cm), occasionally found connected with the lower part of the canal of the epididymis or with the commencement of the vas deferens.
2. A vestige of the bile ducts sometimes found in the liver.

vas afferens

An afferent vessel of a lymph node.

vas afferens glomeruli

The afferent arteriole that carries blood to the glomerulus of a renal corpuscle.

vas capillare

A capillary blood vessel.
Enlarge picture

vas deferens

The secretory duct of the testis, a continuation of the epididymis. This slim, muscular tube, approx. 18 in (45.7 cm) long, transports the sperm from each testis to the ejaculatory duct, which empties into the prostatic urethra.
Synonym: ductus deferens See: illustration; genitalia for illus.

vas lymphaticum

One of the vessels carrying the lymph.

vas prominens

Blood vessel on the cochlea's accessory spiral ligament.

vas spirale

A large blood vessel beneath the tunnel of Corti in the basilar membrane.
Medical Dictionary, © 2009 Farlex and Partners


A vessel or channel conveying fluid. See VAS DEFERENS.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


, pl. vasa (vas, vā'să) [TA]
Duct or canal conveying any liquid (e.g., blood).
[L. a vessel, dish]
Medical Dictionary for the Dental Professions © Farlex 2012
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On the VAS IVR too, all the services are run on the same single IVR platform.
The VAS industry expects a turnover of ` 1 lakh crore by 2020, up from ` 10,000 crore now, said experts.
David Bentley, partner at consultancy Big Pond Aviation, said: "VAS is an acquisitive company.
"VAS's local experience and familiarity with the customer requirements will enable them to meet the expectations of quality and timely service.
Second, VAS can be a self-service tool, where the client has the tools to better manage the account and the insured risk on their own time.
SHOWBIZ BUDDIES Old pals Chloe and Vas first met at a party
'I hope the discussions today from the summit will, I am sure, have covered many of these issues and considered the challenges and solutions for digital growth in Botswana, and I am very pleased that the Botswana Value Added summit has provided the opportunity for an in depth consideration of the benefits of incorporating VAS,' said Ms Ransome.
Channel VAS is a market-leading provider of mobile financial services, big data analytics and airtime credit services to mobile subscribers in Africa, the Middle East, Asia, Latin America and Europe, through internationally patented proprietary technology.
Results: HR, SAP, DAP, PI, VAS values before the procedure were different than all follow-ups (p<0.001).
The primary efficacy endpoint was the mean change in VAS score for pain between baseline and the 3-month follow-up visit.
Pain was then recorded 2 hours later following the interventional drug and placebo tablets, using 3 internationally validated pain scales: Verbal pain intensity scale (VPIS), Visual analogue scale (VAS) and Numeric pain scale (NPS).